Dual mode fiber monitoring system which has protection optical path and whose fault can be healed by itself, and dual mode fiber monitoring method

Abstract

The invention provides a dual mode fiber monitoring system which has a protection optical path and whose fault can be healed by itself, and a dual mode fiber monitoring method. The dual mode fiber monitoring system relates to the field of optical fiber communication of electric power system, and aims to resolve the problems of the prior art that the monitoring mode is fixed and singular, and the switching of fault lines by men is not in time, leading to the long-term interruption of optical fiber communication. The dual mode fiber monitoring system comprises a monitoring unit. Each monitoring unit monitors a fiber line. The free switching between a working fiber core monitoring mode and an inoperative fiber core monitoring mode can be realized, and the vibration monitoring of the protection fiber core of the working fiber core and the self-healing of a fault fiber core optical path can be switched automatically. Each monitoring unit is composed of a starting end monitoring subunit and a receiving end monitoring subunit. A plurality of starting end monitoring subunits share a starting end optical path switching module. A plurality of receiving end monitoring subunits share a control processor, a data collecting module, an optical power monitoring module, an optical detection module, an inoperative fiber core monitoring module, a receiving end optical path switching module, an OTDR, a vibration alarming module, an optical alarming module, a sixth optical switch and a seventh optical switch.

Description

technical field [0001] The invention relates to the field of optical fiber communication in electric power systems, in particular to a dual-mode optical fiber monitoring system and method with a protective optical path and self-healing faults. Background technique [0002] Because optical fiber communication has the characteristics of large capacity, low loss, and high speed, it has been widely used in power system communication. The power optical fiber communication private network can transmit more and more complex information, ensuring the reliability and reliability of the power optical fiber communication network. Availability is an important guarantee for safe production and efficient operation of power systems. [0003] Since the power optical fiber communication network has the characteristics of high coverage, dense network, difficult maintenance, and great impact of failure, especially the optical fiber laying environment of the urban power system is more complicat...

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