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Flexible seal beard-imitated underwater flow field sensor and preparation method thereof

A sensor and flexible technology, which is used in the transmission of sensing components, instruments, fluid velocity measurement and other directions using electric/magnetic devices. It can solve the problem of strong sensor noise, and achieve the effect of reducing sensor noise, facilitating manufacturing, and reducing flow field resistance.

Active Publication Date: 2022-02-18
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the Karman vortex street effect, when the mast is exposed to water flow, a periodic vortex street will be generated downstream of the mast, and this vortex street will cause the mast to vibrate strongly, which is manifested as a strong noise of the sensor

Method used

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  • Flexible seal beard-imitated underwater flow field sensor and preparation method thereof
  • Flexible seal beard-imitated underwater flow field sensor and preparation method thereof
  • Flexible seal beard-imitated underwater flow field sensor and preparation method thereof

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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0040] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] figure 1 It is a schematic diagram of the shape of a seal's whiskers. see figure 1 , the seal's whiskers have a wavy outline with an elliptical cross-section, and the cross-sectional size changes periodic...

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Abstract

The invention discloses a flexible seal beard-imitated underwater flow field sensor and a preparation method thereof. The sensor comprises a bionic beard cylinder, a flexible cylinder, a flexible substrate and a piezoresistive unit, wherein the flexible cylinder is arranged on the flexible substrate; the bionic beard cylinder is arranged on the flexible cylinder; the bionic beard cylinder is provided with a wavy imitation spotted seal beard shape; a piezoresistive unit is arranged on the side surface of the flexible cylinder; the piezoresistive unit passes through the flexible substrate lead; and the piezoresistive unit is used for converting the strain generated on the flexible cylinder into an electric signal so as to detect an underwater flow field. The noise of underwater flow field detection can be reduced.

Description

technical field [0001] The invention relates to the field of flow field detection, in particular to a flexible imitation seal beard underwater flow field sensor and a preparation method thereof. Background technique [0002] Miniaturized, lightweight, and flexible flow field sensors are of great significance to underwater unmanned submersibles. They can assist aircraft to achieve high-concealment, low-noise environmental detection, autonomous cruise and obstacle avoidance, and even track fish and other underwater vehicles. The lower object has broad application prospects. Inspired by marine life, current research in this field focuses on various columnar flow field sensors. However, due to the Karman vortex street effect, when the mast is exposed to water flow, a periodic vortex street will be generated downstream of the mast. This vortex street will cause the mast to vibrate strongly, which is manifested as strong noise of the sensor. Contents of the invention [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/16G01M10/00G01P5/00
CPCG01D5/16G01M10/00G01P5/00
Inventor 蒋永刚刘公超胡心宁张德远
Owner BEIHANG UNIV
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