Far-field eddy current detection system for steel wire rope surface defects

The invention relates to a far-field eddy current detection system for steel wire rope surface defects. The far-field eddy current detection system for the steel wire rope surface defects is characterized in that an excitation device is connected with an excitation end of a probe through shielded conductive wires, and a receiving end of the probe, a differential detection device and a data acquisition device are sequentially connected through a communication interface. The excitation device is of an oscillator module for generating an excitation signal and a power amplification module for amplifying, filtering and denoising the excitation signal; the probe is of an excitation-reception mode, excitation coils and reception coils are arranged in an array mode along the radial direction of asteel wire rope and are arranged at a certain distance along the axial direction of the steel wire rope; the differential detection device is composed of a differential amplification module, a polarity conversion module, a di