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Pressure detection device and method based on polymer optical fiber junction sensor

A detection device and detection method technology, applied in the direction of measuring devices, measuring fluid pressure, instruments, etc., can solve problems such as shortage, and achieve the effects of stable performance, good flexibility, and rich application range

Active Publication Date: 2021-10-26
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the prior art lacks a polymer optical fiber sensor with simple preparation process, high sensitivity and compact structure.

Method used

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  • Pressure detection device and method based on polymer optical fiber junction sensor
  • Pressure detection device and method based on polymer optical fiber junction sensor
  • Pressure detection device and method based on polymer optical fiber junction sensor

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] Such as figure 1 As shown, the device includes a knotted polymer optical fiber arranged at the desired pressure detection position, the polymer optical fiber has a core and a cladding, the polymer optical fiber is knotted, and the optical fiber overlap formed at the knot is a fiber knot. The optical fiber overlap is tested by applying pressure.

[0033] In a specific implementation, the polymer optical fiber is knotted into a half-knot, and the knotted position of the polymer optical fiber is located in the middle of the polymer optical fiber.

[0034] In a specific implementation, a light source and a detector are also included, and the two ends of the polymer optical fiber are respectively connected to the light source and the detector. The polymer optical fiber is buried in the flexible polymer, and the flexible polymer is pressed to drive t...

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Abstract

The invention discloses a pressure detection device and method based on a polymer optical fiber junction sensor. The device comprises a polymer optical fiber arranged at a required pressure detection position, the polymer optical fiber is knotted, an optical fiber overlapping part formed at the knotted position is an optical fiber knot, pressure is applied to the optical fiber overlapping part for detection, the optical fiber knot is located in the middle of the polymer optical fiber, and the two ends of the polymer optical fiber are connected with a light source and a detector respectively; when the polymer optical fiber knot is subjected to external pressure, the bending angle of the optical fiber is increased, the output light intensity is reduced, and pressure sensing is realized by establishing a one-to-one correspondence relationship between the light intensity and the pressure. The pressure detection device has the characteristics of simplicity in preparation, high sensitivity and capability of distinguishing the pressure direction, and the pressure detection precision and range are adjustable.

Description

technical field [0001] The invention relates to a pressure sensing detection device in the field of flexible optical fiber sensors, in particular to a pressure detection device and method based on a polymer optical fiber knot sensor. Background technique [0002] With the development of the Internet, the Internet of Things, and artificial intelligence technology, the society's demand for high-performance sensors is increasing. As a new technology that emerged in the late 1970s, fiber optic sensors are favored for their superior performance. Different from traditional mechanical or electronic sensors, optical fibers have small size, light weight, softness, high sensitivity, and electromagnetic resistance. Interference, electrical safety and many other advantages have advantages in the design and manufacture of flexible sensing systems. [0003] The optical fiber sensor uses the optical fiber as a sensitive element, and uses the characteristics of the optical fiber itself to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L19/00
CPCG01L19/00
Inventor 张磊潘婧张璋
Owner ZHEJIANG UNIV
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