Nearshore submarine cable shape high-precision real-time monitoring and sensing system

• Main Authors: PENG WEILONG, XU BEIBEI, XU ZHENG, WANG RENMING, ZHENG XINLONG, LU ZHENGTONG, HE XUTAO, SUN LU, YUE YANJIE, LU ZHIFEI, TAO SHIJIE, HU KAI, LEI ZHICHU
• Format: Patent
• Language: Chinese; English
• Published: 12.04.2022
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The utility model discloses a high-precision real-time monitoring and sensing system for the shape of a near-shore submarine cable, and relates to the field of submarine cable detection devices. A submarine cable in a near-shore area needs to consider risks caused by natural environments such as sea waves, tides, gravel impact, extreme weather and seawater corrosion and risks caused by human factors such as fishing nets, floating objects, offshore platforms and ship anchors, so that the submarine cable is very difficult to monitor. The system comprises a main control computer, a storage battery, a fiber bragg grating string, a spectrograph, a laser light source and an optical circulator. When the shape of the submarine cable changes and the deformation is transmitted to the optical fiber bragg grating string, the grating pitch on the optical fiber bragg grating is changed, the optical wavelength reflected by the optical fiber bragg grating is changed, and the spectrograph can read the change of the reflected