Method and system for field application and calibration of reflection fiber optic displacement sensor

A technology of displacement sensors and sensors, which is applied in the direction of instruments, optical devices, measuring devices, etc., can solve problems such as inability to establish on-site calibration, and achieve the effect of increasing accuracy, good stability and accuracy
CN104048610AInactive Publication Date: 2014-09-17INST OF GEOLOGY CHINA EARTHQUAKE ADMINISTRATION
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INST OF GEOLOGY CHINA EARTHQUAKE ADMINISTRATION
Publication Date
2014-09-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method and system for field application and calibration of a reflection fiber optic displacement sensor. The method includes the steps that when a target surface is monitored to be in the range of a laser displacement sensor and the fiber optic displacement sensor, the preset moving speed, the preset moving distance and the preset moving direction of the target surface are set; a motor controls the target surface to move according to the preset moving speed, the preset moving distance and the preset moving direction, and the measurement value collected by the laser displacement sensor is read in real time in the moving process; the actual moving speed of the target surface is calculated according to the measurement values, and when the actual moving speed is judged to be consistent with the set moving speed, the measurement value collected by the laser displacement sensor is recorded, and the voltage value measured by the fiber optic displacement sensor is read; accurate time hack is conducted on the measurement value and the voltage value, then storage is conducted, and fitting is conducted according to the measurement value and the voltage value to generate a calibration curve. The method and system for field application and calibration of the reflection fiber optic displacement sensor solve the problem that a fast and high-precision field suitable for different reflection conditions for calibration cannot be built at present.
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Description

technical field

[0001] The present application relates to the technical field of reflective optical fiber displacement sensing, in particular to a method and system for field application calibration of reflective optical fiber displacement sensors. Background technique

[0002] Reflective optical fiber displacement sensing technology is a continuous light source as the measurement carrier, the light intensity as the measurement signal, and the optical fiber as the propagation medium. By sensing the measured signal and distinguishing the relationship between the received signal and the transmitted signal, the displacement of the measured object can be obtained. Technology (references: Cong Hong, reflective optical fiber micro-displacement sensor. 2003). Compared with other displacement sensors, optical fiber displacement sensors have the characteristics of high frequency response (high sensitivity), non-contact measurement, small size, simple structure, anti-electrical interf...

Claims

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