Display method and system for optical fiber detection and optical time domain reflectometer

Abstract

The invention provides a display method and system for optical fiber detection and an optical time domain reflectometer. According to the method, the system receives and collects reflected signals of tested optical fibers based on testing signals sent to the tested optical fibers to obtain detection data of the corresponding reflected signals, and the dead zone width of events in the tested optical fibers is preset; wavelet domain transformation is carried out on the collected detection data, and an extreme point is determined in high-frequency coefficients; detection data with a peak value and a valley value are determined in the dead zone width behind the detection data corresponding to the extreme point, and the detection data corresponding to the extreme point, the peak value and the valley value are used as key points; inter-partition average calculation is carried out on the other detection data spaced by the determined key points, and detection data are selected from the detection data of partitions as the key points corresponding to the average value of the corresponding partitions; the determined key points are connected and displayed according to the time sequence. Therefore, the detected waveform is displayed accurately and fast.

Description

technical field [0001] The invention relates to a display method for optical fiber detection, in particular to a display method, system and optical time domain reflectometer for optical fiber detection. Background technique [0002] The optical time domain reflectometer is an instrument for understanding the uniformity, defect, fracture, joint coupling and other properties of the optical fiber through the analysis of the measurement curve. It is made according to the principle of light backscattering and Fresnel reflection, and uses the backscattering light generated when light propagates in the fiber to obtain attenuation information, which can be used to measure fiber attenuation, joint loss, fiber fault location and understand fiber Loss distribution along the length, etc., is an indispensable tool in the construction, maintenance and inspection of optical cables. The optical time domain reflectometer provides technicians with the detection status of the optical fiber by...

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Problems solved by technology

[0009] In view of the shortcomings of the prior art described above, the object of the present invention is to provide a display method, system and optical time domain reflectometer for optical fiber detection, which are used to solve the problem of inaccuracy of events displayed during optical fiber detection in the prior art. high problem

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