Pressure transducer having stress concentration

A technology of pressure sensor and stress concentration, which is applied in the fields of identification, communication, marine environment monitoring, marine resource development, and underwater detection. It can solve the problems of high sensor cost, poor electromagnetic resistance, poor pollution ability, and pressure sensors that cannot be used. The effect of high sensitivity

Inactive Publication Date: 2016-12-07
北京中智永科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Traditional pressure sensors are generally silicon piezoresistive, which has high cost and poor resistance to electromagnetic and pollution
The tradition

Method used

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  • Pressure transducer having stress concentration

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Example Embodiment

[0021] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples cited are only used to explain the present invention, and are not used to limit the scope of the present invention.

[0022] Such as figure 1 As shown, a pressure sensor with stress concentration in this embodiment includes:

[0023] A casing 1, a cylindrical structure with both ends of the casing 1 blocked, and the casing 1 is provided with a mounting hole 11 and a suction hole 12;

[0024] Metal film 2, the metal film 2 is arranged in the mounting hole 11 and its peripheral edge is fixedly connected with the inner wall of the mounting hole 11; the metal film 2 is provided with a stress concentration groove 21; the metal film 2 and The welding point 22 formed by welding the mounting hole 11 is such as figure 1 Shown

[0025] The FBG fiber 3 is fixed on the outside of the metal film 2.

[0026] The structure of the pressure sensor of this embod...

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Abstract

The invention relates to a pressure transducer having stressing concentration. The pressure transducer includes a housing which assumes a cylindrical structure having two ends blocked and is provided with a mounting hole and an air exhaust hole thereon; a metal membrane which is arranged inside the mounting hole and has an circumferential edge which is fixedly connected to the inner wall of the mounting hole, the metal membrane being provided with a stress concentration groove thereon; and a FBG fiber which is fixed to the outside of the metal membrane. According to the invention, the pressure transducer adopts the metal membrane and the housing to enclose a cavity, and the metal membrane is provided with the stress concentration groove, such that a signal can be amplified and the sensitivity of the pressure sensor is higher.

Description

technical field [0001] The invention relates to the technical fields of underwater detection, identification, communication, marine environment monitoring and marine resource development, in particular to a pressure sensor with stress concentration. Background technique [0002] Traditional pressure sensors are generally silicon piezoresistive, which has high cost and poor resistance to electromagnetic and pollution. The traditional silicon piezoresistive pressure sensor has low sensitivity. When measuring the pressure array, the traditional pressure sensor cannot use a line for transmission. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a pressure sensor with stress concentration for the deficiencies of the prior art. [0004] The technical solution of the present invention to solve the above technical problems is as follows: a pressure sensor with stress concentration, comprising: [0005] A casing, a cylin...

Claims

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Application Information

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IPC IPC(8): G01L1/24
CPCG01L1/246
Inventor 智岩桥
Owner 北京中智永科技发展有限公司
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