Optical fiber sensing microspur measurement system

Abstract

The invention provides an optical fiber sensing microspur measurement system which comprises a light source, an optical detector, a sensor probe, a reflection unit, a wireless transmitting module, a wireless receiving module and a processing module. The sensor probe is used for receiving incident light emitted by the light source and sending obtained reflected light to the optical detector after processing the incident light; the optical detector is used for converting a received optical signal into an electric signal and sending the electric signal to the processing module by the wireless transmitting module and the wireless receiving module after processing the electric signal; the processing module is used for measuring a distance according to a set function relation between the size of the optical signal received by the optical detector and a distance from an optical fiber end face to a reflecting surface. The optical fiber sensing microspur measurement system provided by the invention can work in the harsh environment in the field, can work for a long time and can be used for implementing unmanned monitoring and early warning on the microspur or the displacement of an object. The optical fiber sensing microspur measurement system can be used for measuring distance variation of a large-scale hydraulic core cylinder and can be used for monitoring distance variation at any time, so that not only is labor released, but also working efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of test and measurement, and relates to a macro-distance measurement system, in particular to an optical fiber sensor macro-distance measurement system. Background technique [0002] A sensor is a physical device or biological organ that can detect and sense external signals, physical conditions (such as light, heat, humidity) or chemical composition (such as smoke), and can transform the information sensed by detection into Electrical signals or other required forms of information output to meet the requirements of information transmission, processing, storage, display, recording and control. Sensors are the primary link to realize automatic detection and automatic control. [0003] According to the working principle of the sensor, it can be divided into two categories: physical sensor and chemical sensor. Classification of sensor working principle Physical sensors apply physical effects, such as piezoele...

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Problems solved by technology

[0009] (3) Hysteresis: The phenomenon that the input and output characteristic curves of the sensor do not overlap during the change of input volume from small to large (forward stroke) and input volume from large to small (reverse stroke) becomes hysteresis

However, existing distance measuring instruments based on the principle of optical fiber sensing cannot measure

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