Steel wire safety detection method for stage winch

The invention provides a steel wire safety detection method for a stage winch, and relates to the technical field of stage safety. The method comprises the following steps of S1, installing a magnetizing device in a winch drum and installing a hall sensor at a steel wire outlet; S2, winding steel wire to the surface of the winch drum; S3, starting the magnetizing device to magnetize steel wire wound on the winch drum; S4, acquiring the magnetic flux change in a magnetization loop in the steel wire in real time, and acquiring the safety coefficient of the steel wire; and S5, judging whether the steel wire safety coefficient value is lower than a preset safety threshold value or not, if yes, giving an alarm, and otherwise, continuing executing the step(4). The steel wire safety detection method for the stage winch is simple in structure, capable of making steel wire safety convenient to detect and high in accuracy, can perform safety detection at any time without disassembling the steelwire, and is little influ