Distributed optical fiber vibration signal recognition algorithm based on two-dimensional matrix feature recognition

Abstract

The invention discloses a distributed optical fiber vibration signal recognition algorithm based on two-dimensional matrix feature recognition, and the algorithm comprises the following steps: a light signal is acquired and is transformed as an original electrical signal, the original electrical signal is filtered, two-dimensional data generation is performed on the waveforms, image dilation is performed on the generated two-dimensional data through a morphological processing method, hole filling is performed on the two-dimensional data through the morphological processing method, an MATLAB software system is utilized to realize local area filling of an image, region segmentation is performed on the generated two-dimensional data through the morphological processing method, character representation and description are performed on a recognized region, the image skeleton is extracted, a Fourier descriptor of the image is extracted, and the recognition of the vibration signal is performed through the Fourier descriptor. According to the invention, the recognition effect is higher than before, the data is more accurate than before, and the reliability is high.

Description

technical field [0001] The invention belongs to the technical field of vibration signal recognition algorithms, and more specifically relates to a distributed optical fiber vibration signal recognition algorithm based on two-dimensional matrix feature recognition. Background technique [0002] Distributed optical fiber sensing system is a sensing system that uses optical fiber as sensing sensitive element and transmission signal medium. The principle of distributed optical fiber sensing system is to use optical fiber as sensing sensitive element and transmission signal medium at the same time, and adopt advanced OTDR technology to detect the temperature and strain changes at different positions along the optical fiber to realize truly distributed measurement. Distributed optical fiber sensing is widely used. For the distributed optical fiber vibration signal recognition algorithm, the existing algorithm has low recognition efficiency, it is difficult to guarantee the accurac...

AI Technical Summary

Problems solved by technology

Distributed optical fiber sensing is widely used. For the distributed optical fiber vibration signal recognition algorithm, the existing algorithm has low recognition efficiency, it is difficult to guarantee the accuracy of the data, and the reliability is not high.