Cascade type automatic monitoring system of optical cable

Abstract

The invention relates to a cascade type automatic monitoring system of an optical cable, which comprises a monitoring host and OTDRs (optical time domain reflectometers), wherein the monitoring host is connected with the multiple OTDRs through a computer network; each OTDR is connected to the input port of a cross optical matrix switch through a short optical fiber; and the output port of the cross optical matrix switch is connected with the measured optical cable. The cascade type automatic monitoring system provided by the invention has the advantages that the service of the OTDRs is not limited to be locally used through the switching control of a multistage optical matrix switch, thereby improving the service efficiency of the OTDRs, greatly reducing the time cost and expanding the measuring range of the optical cable; the monitoring host can monitor the remote terminal equipment of the optical cable in real time through an SNMP (simple network management protocol), monitors a target optical cable and immediately reports the fault conditions; the cross optical matrix switch is used to enable the multiple OTDRs to be operated in parallel or alternately rest, thereby solving the conflict between the utilization rate and heat radiation of the OTDRs.

Description

technical field [0001] The invention relates to a cascade optical cable automatic monitoring system, which belongs to the field of communication optical cable monitoring. Background technique [0002] Because optical fiber communication has the characteristics of large capacity, high quality of transmitted information, and long transmission distance. With the rapid development of the national economy, the domestic application of optical cables (optical cables: using multiple optical fibers to form a cable core, plus a protective sheath, for long-distance transmission of optical signals) in China has shown explosive growth in recent years. Conventional optical cable monitoring tools generally have defects such as small monitoring range, untimely fault detection, and low degree of automation. With the continuous expansion of the optical cable network, the traditional monitoring technology has been unable to meet the monitoring requirements of large-scale optical cable. [00...

AI Technical Summary

Problems solved by technology

If the number of optical cables is huge, querying data is very time-consuming

like figure 2 As shown, if after receiving the repair report and diagnosing that the backbone optical cable is normal, it is necessary to go to the secondary computer room to test the secondary optical cable. This method is very time-consuming

[0005] Another problem is that the OTDR will heat up after continuous use. If it is not allowed to cool down in time to test the image, it may damage the OTDR or shorten its service life.

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