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Single fiber bundle probe differential pressure sensor

A differential pressure sensor and optical fiber probe technology, applied in the sensor field, can solve problems such as poor practicability, unsuitable differential pressure sensor, and inability to meet differential pressure measurement requirements.

Active Publication Date: 2015-11-04
DONGXING HUAHONG OPTICAL TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a single optical fiber bundle probe differential pressure sensor to solve the problem that the existing differential pressure sensor is not suitable for many occasions and is not practical , unable to meet the actual pressure differential measurement requirements

Method used

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Embodiment

[0069] refer to figure 1 , the present embodiment provides a single fiber bundle probe differential pressure sensor, including a sensor probe 1, a photodetector 2, a signal processor 3, a light source 4, a Y-coupler 5 and an optical fiber 6;

[0070] The sensor probe 1 includes a housing 11, the housing 11 is a cylindrical structure, a piston 12 is slidingly arranged in the housing 11, the material of the piston 12 is hard aluminum alloy, and a piston seal is arranged between the piston 12 and the inner wall of the housing 11 Ring 111, a spring 14 is respectively arranged at the two ends of the piston 12, and the structure and specifications of the two springs 14 are all the same. One end of the spring 14 is all fixed on the piston 12, and the two ends of the housing 11 are respectively sealed and fixed with an end cover 13, and the middle part of the end cover 13 is provided with a raised portion 132 extending into the housing 11, and the raised portion 132 is in contact wit...

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Abstract

The invention provides a single fiber bundle probe differential pressure sensor. A housing of a sensor probe is internally and slidbly provided with a piston; the two ends of the piston are respectively provided with a spring; one end of each of the two springs is fixed to the piston; the two ends of the housing are fixedly and respectively provided with an end cover; the other end of each of the two springs is fixed to the corresponding end cover; the two end covers are respectively provided with a through hole along the length direction of the housing; the two ends of the piston are respectively provided with a piston rod; the other ends of the two piston rods extend into the through holes in the corresponding end covers respectively; the other end of one through hole is inserted by a fiber probe; cavities at the two ends of the piston are respectively provided with a fluid though hole communicated with the external portion of a probe structure; an outgoing fiber of the fiber probe is connected with a photoelectric detector; and the photoelectric detector is connected with a signal processor. Therefore, the problems that an existing differential pressure sensor is not suitable in many occasions, is not high in practicality and cannot meet actual differential pressure measurement requirements are solved. The single fiber bundle probe differential pressure sensor belongs to the differential pressure detection field.

Description

technical field [0001] The invention relates to a sensor and belongs to the technical field of optical fiber sensing. Background technique [0002] Differential pressure sensors are widely used in industry and are mainly used to measure the pressure difference of equipment, components or fluids at different positions. They are widely used in detection fields such as tail pressure difference, gas flow, liquid level, and clean room monitoring. Nowadays, differential pressure sensors using different principles have appeared, such as resistive, capacitive, inductive, throttle, magnetic liquid, MEMS, etc. Among them, resistive and capacitive are more common, and other types are not practical due to Strong, limited or still in the concept stage, and has not been promoted, but resistive and capacitive differential pressure sensors also have their own shortcomings, and cannot be well competent in many occasions. Contents of the invention [0003] The object of the present inventi...

Claims

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Application Information

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IPC IPC(8): G01L13/00
Inventor 胡浩陈明强卢泽钟丽琼
Owner DONGXING HUAHONG OPTICAL TECH
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