Automatic marking device of large-capacity grating array optical cable and marking method of automatic marking device

Abstract

The invention relates to an automatic marking device of a large-capacity grating array optical cable and a marking method of the automatic marking device. The device comprises a control system, a pay-off machine, a heating groove, a demodulator, an air drying groove, an ink-jet printing machine and a take-up machine, wherein the pay-off machine, the heating groove, the demodulator, the air dryinggroove, the ink-jet printing machine and the take-up machine are sequentially arranged along the optical fiber. The control system can be used for adjusting take-up and pay-off speeds and tension of the take-up machine and the pay-off machine, a temperature and a water level of the heating groove and a cooling and air drying effect of the air drying groove; when a sequence number is recorded and send to the control system when that the temperature of a certain grating point reaches a threshold id detected by the demodulator, the control system controls the pay-off machine and the take-up machine to employ a slow speed mode, and the control system is used for controlling the ink-jet printing machine to performing ink-jet printing on the optical cable after the optical cable is slowed down and stepped for certain distance; and a warning is sent to the control system when that the sequence number of the grating point reaching the threshold is not continuous is detected by the demodulator,and the whole device is stopped by the control system. The device can be used for rapidly, accurately and automatically positioning and marking the grating point of the large-capacity grating array optical cable and is high in marking accuracy.

Description

technical field [0001] The invention belongs to the technical field of optical fiber gratings, and in particular relates to an automatic marking device and a marking method for a large-capacity grating array optical cable. Background technique [0002] Grating array technology is a new type of optical fiber sensing technology that has emerged in recent years. It uses wavelength division multiplexing (WDM) and optical time domain reflectometry (OTDR) technology to overcome the short detection distance and low spatial resolution of traditional fiber grating demodulation methods. Defects, its single-channel detection distance can reach up to 50 kilometers, and the spatial resolution can reach 10cm. It is the latest optical fiber sensing technology that combines the advantages of distributed optical fiber and fiber Bragg grating sensing technology. With the maturity and promotion of this technology, some problems have appeared one after another. For example, the number of gratin...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that the large-capacity grating array optical cable cannot accurately locate the position of the grating, the present invention proposes an automatic marking device and a marking method for the large-capacity grating array optical cable. The device can quickly, accurately and automatically mark the large-capacity grating array optical cable For grating point positioning and marking, it can adapt to grating arrays of different densities and lengths, with high marking accuracy

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