Optical fiber transient interruption feature information extracting system based on self-adaptive updating of reference value

Abstract

The invention relates to an optical fiber transient interruption feature information extracting system based on self-adaptive updating of a reference value. The system comprises a sliding average value calculation module, a reference value self-adaptive updating module, a reference value threshold calculation module and a transient interruption judgment module, wherein the sliding average value calculation module is used for performing updating storage on received luminous power sampling values and calculating a sliding average luminous power sampling value; the reference value self-adaptive updating module is used for obtaining a judgment reference value of optical fiber transient interruption according to the sliding average luminous power sampling value and performing self-adaptive updating; the reference value threshold calculation module is used for determining a judgment threshold of optical fiber transient interruption according to the judgment reference value of optical fiber transient interruption and a user-defined threshold range; the transient interruption judgment module is used for comparing the sliding average luminous power sampling value with the judgment threshold of optical fiber transient interruption, judging whether the optical fiber has transient interruption and outputting feature information of optical fiber transient interruption according to a judgment result. Compared with the prior art, the system has the advantages of self-adapting to updating of judgment reference, rapidly extracting transient interruption feature information, being suitable for various recovery conditions, meeting a design requirement from a low speed to a high speed and the like.

Description

technical field [0001] The invention relates to the field of optical fiber, in particular to a system for extracting optical fiber instantaneous break feature information based on self-adaptive update reference value. Background technique [0002] In an optical communication system, an optical fiber is used as a channel for transmitting information, connecting the sending end and the receiving end. In the working environment of vibration, high temperature, low temperature, high humidity, etc., due to the influence of external factors, the optical fiber may break instantaneously, referred to as optical fiber instantaneous break. The instantaneous break of the optical fiber will cause the optical power at the receiving end of the optical communication system to change greatly during the break, causing data transmission errors and significantly increasing the bit error rate of the system. Therefore, the optical communication system needs real-time optical fiber breakage detect...

AI Technical Summary

Problems solved by technology

[0004] The existing optical fiber transient detection systems all use a fixed optical fiber transient judgment reference value for transient feature extraction, which is difficult to adapt to complex optical fiber transient situations

If the optical fiber does not return to the optical power value before the momentary break after the momentary break, the existing fiber breakage detection system will always be in the state of the breakout and cannot correctly handle the subsequent breakout

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