Blade-type damping optical-fiber differential pressure sensing system and detection method thereof

Abstract

The invention provides a blade-type damping optical-fiber differential pressure sensing system and a detection method thereof and belongs to the field of differential pressure detection. A rotating portion is arranged in a housing, partition plates are arranged on the two opposite sides of the rotating portion, an inner cavity of the housing is divided into two detection cavities by the rotating portion and the partition plates, the two detection cavities are correspondingly provided with detection fluid inlets, a damping spring is arranged on one side of one partition plate, one end of the damping spring is fixed, the other end of the damping spring is fixed to the partition plate, a through hole is formed in the rotating center of the rotating portion, a shading piece is fixedly arranged in the through hole, an incoming optical fiber is arranged on one side of the shading piece, a receiving optical fiber is arranged on the other side of the shading piece, and the receiving end face of the receiving optical fiber is divided into an optical fiber receiving portion and a non-optical-fiber receiving portions. The problems that existing differential pressure sensors are poor in practicability and larger in limitation or is still in a concept period and cannot be popularized and used and relatively common resistance-type and capacitance-type differential pressure sensors also have their shortcomings, are not applicable in lots of occasions and cannot meet the actual differential pressure measurement requirements are solved.

Description

technical field [0001] The invention relates to a sensing system and belongs to the technical field of optical fiber sensing. Background technique [0002] Differential pressure sensors are widely used in industry, mainly for equipment measurement, pressure difference of components or fluids at different positions, and 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. Based on this, the present invention proposes a novel optical fiber bundle...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a blade damping optical fiber differential pressure sensing system and its detection method to solve the problem that existing differential pressure sensors are not practical, have large limitations or are still in the concept stage and cannot be popularized and used. The more common resistive and capacitive differential pressure sensors also have their own shortcomings, which are not suitable for many occasions and cannot meet the actual requirements of differential pressure measurement.

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