Intelligent double wire center temperature monitoring single core cable based on fiber grating

The invention discloses an intelligent double wire center temperature monitoring single core cable based on a fiber grating. A cable core comprises multiple leads and one fiber sensing unit, wherein the fiber sensing unit comprises a tensile core, a grating fiber and a protective tube, the tensile core and the grating fiber are arranged in the protective tube, the grating fiber is arranged aroundthe tensile core, the cable core is externally wrapped in a wrapping layer, and the wrapping layer is externally wrapped in a sheath layer. The intelligent double wire center temperature monitoring single core cable based on the fiber grating is advantaged in that structure design is optimized and reasonable, through arranging the grating fiber among the leads of the cable core, change of the pathof light in the fiber is detected, rapid accurate monitoring of the cable temperature is carried out, moreover, the grating fiber is arranged around the tensile core, axial tensile strength of the grating fiber is guaranteed, and service life of the fiber is improved.