Fault detection method and device

Abstract

The invention discloses a fault detection method and device, and belongs to the technical field of communication. The fault detection method is applied to combined wave and partial wave systems and includes the steps of obtaining receiving light power of at least one receiving light module and at least two kinds of light power in sending light power, sending total light power and receiving total light power of at least one sending light module in the light signal transmitting process, respectively judging whether the obtained various kinds of light power are normal when a fault happens, and determining the position where a fault point is located according to the judging results of the various kinds of light power. When the fault happens, the fault detection method can be used for determining the position where the fault point is located by judging whether the obtained various kinds of light power are normal, solves the problem that passive components can not carry out fault positioning, achieves automation of fault positioning, greatly reduces workload due to the fact that manual detection is not needed, reduces maintenance cost, improves fault removal speed and improves system performance.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a fault detection method and device. Background technique [0002] In a network using multiplexing and demultiplexing systems, multiple WDM (Wavelength Division Multiplexing, wavelength division multiplexing) optical modules can be used to combine optical signals of different wavelengths through MUX (Multiplexing, multiplexer) ( multiplexing), and transmit it through an optical fiber, and then separate (demultiplex) the optical signals of different wavelengths in the transmitted signal through DEMUX (De Multiplexing) to realize the optical signals of different wavelengths The purpose of coupling into the same optical fiber for transmission. [0003] In the process of realizing the present invention, the inventor finds that there are at least the following problems in the prior art: [0004] Since the MUX and DEMUX are passive, fault location cannot be performed, and due ...

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Problems solved by technology

[0004] Since the MUX and DEMUX are passive, fault location cannot be performed, and due to the large number of optical module interfaces, the probability of faults such as dirty interfaces and pigtail aging is relatively high. It is necessary to check every possible fault location, the operation is cumbersome, and the time required for troubleshooting is too long, which affects the system performance

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