The invention discloses an intelligent double-wire encircling type
temperature monitoring single-core cable based on an
optical fiber grating. A cable core comprises a wire and
optical fiber sensing units, the wire is located at the central part of the cable core, the wire comprises conductors and an insulating layer wrapping the external parts of the conductors, the
optical fiber sensing units are located at the external part of the wire, each of the
optical fiber sensing units comprises a tensile core, a
grating optical
fiber and a protection
pipe, the tensile core and the
grating optical
fiber are located in the protection
pipe, and the external part of the insulating layer is wrapped by
filling materials to form a cable core with a circular cross section. According to the intelligent double-wire encircling type
temperature monitoring single-core cable based on the optical
fiber grating with an optimized design, the structure and the design are optimized and reasonable, the gratingoptical fibers used for monitoring the temperature are arranged in the cable core so that the temperature of the cable can be rapidly and accurately monitored, the grating optical fibers are arrangedaround the tensile core so that the axial tensile strength of the grating optical fiber can be guaranteed, and the cable core is filled with the
filling materials so that it is effectively guaranteedthat during usage, the position of the
optical fiber sensing unit is fixed and the movement is avoided.