MAKING METHOD AND INTEGRATED SYSTEM FOR PRE-EMBEDDING FIBER GRATING SENSOR IN MAGNETIC WIRE

摘要

A making method for pre-embedding a fiber grating sensor in a magnetic wire, includes: employing a magnetic wire (9) with a slot; enabling the fiber grating sensor (2) to pass through a fiber payingoff wheel (3); and enabling the fiber grating sensor (2) and the magnetic wire (9) with the slot to enter into an oil injection device(4) and to pass through a guide device (5) together, so as to position the fiber grating sensor (2) in the slot of the magnetic wire; then carrying out insulation paper lapping and forming by a paper lapping device (6); conveying the formed product to a wire takeup device (8) through a traction device (7); finally obtaining the magnetic wire pre-embedded with the fiber grating sensor (2). An integrated system for pre-embedding a fiber grating sensor in a magnetic wire is also provided. The making method and the integrated system for pre-embedding the fiber grating sensor in the magnetic wire have the advantages of simple preparation process and excellent pre-embedding effect. The magnetic wire pre-embedded with the fiber grating sensor has favorable temperature sensing property and is not influenced by stress. By connecting a plurality of fiber grating sensors to a single optical fiber in series and forming a quasi-distributed sensing network by the use of a multiplexing technology, the direct measurement of temperature inside the magnetic wire is realized.