Optical fiber sensor packaging process prestress automatic control device and method

Abstract

The invention discloses an optical fiber sensor packaging process prestress automatic control device and method. The device comprises a control module, a displacement module, a tension meter, a fine adjustment module, an optical fiber winding wheel and a base; the fine adjustment module is used for supporting an optical fiber sensor packaging structure, and the height of the fine adjustment module can be adjusted, so that an optical fiber is not subjected to external force in a vertical direction; one end of an optical fiber sensor tail fiber is wound and fixed on the optical fiber winding wheel, and the other end of the optical fiber sensor tail fiber is fixed on a tension meter connecting rod; the tension meter is installed on the displacement module through a supporting piece, moves in the direction of stretching or loosening the optical fiber along with the displacement module, sends a tension value to the control module in real time; and the control module compares the real-time tension value with a preset tension value to make a decision to control the displacement of the tension meter. According to the optical fiber sensor packaging process prestress automatic control device, closed-loop control can be performed on the prestress of an optical fiber sensor according to a preset value; the control device is simple in structure and high in control precision, can be copied, and can easily realize batch packaging of optical fiber sensors.

Description

technical field [0001] The invention relates to the field of optical fiber sensor packaging, in particular to an automatic prestress control device and method for the optical fiber sensor packaging process. Background technique [0002] Various types of optical fiber sensors need to be prestressed on the optical fiber during structural packaging to ensure that the optical fiber sensor has good performance when sensing changes in external physical quantities. The general optical fiber prestressing method, such as the method of hanging heavy objects, is difficult to achieve precise control of the applied force, is easily disturbed by environmental changes, cannot guarantee the performance consistency of optical fiber sensor products, and has a low degree of automation and cannot be quickly batched. Production. Contents of the invention [0003] The purpose of the present invention is to provide an automatic control device for prestress in the packaging process of optical fi...

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Problems solved by technology

The general optical fiber prestressing method, such as the method of hanging heavy objects, is difficult to achieve precise control of the applied force, is easily disturbed by ...

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