Demagnetization method and system

Abstract

The invention relates to a demagnetization method and system. The method comprises the following steps: transmitting a detection signal of a demagnetization coil array to a medium, and generating an original induction signal of the medium; preprocessing the original induction signal to obtain an induction signal; training a medium classification model by adopting a machine learning algorithm through taking the induction signal as an input and the medium type corresponding to the induction signal as an output; training a magnetic field intensity prediction model by adopting a machine learning algorithm through taking the induction signal and the medium type corresponding to the induction signal as input and taking the magnetic field intensity required by demagnetization corresponding to theinduction signal as output; inputting a to-be-eliminated magnetic induction signal into the medium classification model to obtain a medium classification result of the to-be-eliminated magnetic induction signal; inputting the medium classification result and the to-be-demagnetized magnetic induction signal into a magnetic field intensity prediction model to obtain the magnetic field intensity required by medium demagnetization; and demagnetizing the medium according to the magnetic field intensity. The magnetic storage medium is demagnetized according to the acquired magnetic field intensity,so that the energy consumption required by demagnetization is reduced.

Description

technical field [0001] The invention relates to the field of electromagnetic technology, in particular to a degaussing method and system. Background technique [0002] At present, with the progress of national informatization construction, information recording, storage and transmission technologies have developed unprecedentedly. As a storage medium with large capacity and fast transmission speed, magnetic storage medium is widely used in enterprises, individuals and government agencies. Its main magnetic carriers include hard disks, magnetic tapes, floppy disks and other magnetic storage media. Magnetic storage media usually have a certain service life, and the continuous improvement of usage requirements has further accelerated the replacement of magnetic storage media, so a large number of scrapped magnetic storage media have been generated, and it has also brought information leakage and illegal information on scrapped magnetic storage media. Stealing and large amounts...

AI Technical Summary

Problems solved by technology

Magnetic storage media usually have a certain service life, and the continuous improvement of usage requirements has further accelerated the replacement of magnetic storage media, so a large number of scrapped magnetic storage media have been generated, and it has also brought information leakage and illegal information on scrapped magnetic storage media. Stealing and a large amount of sensitive information eliminates incomplete security issues

[0003] The electromagnetic degaussing system is a degaussing technology that uses a strong magnetic field to destroy the information in the storage medium. Due to the wide variety of magnetic storage media and different shapes, the strength of the degaussing field required for complete degaussing and destruction of different types of magnetic storage media is quite different. This brings difficulties to the use and upgrade of the electromagnetic degaussing system

Existing electromagnetic degaussing systems usually do not have the ability to identify the type of storage media. The maximum power of the degaussing machine is used uniformly to destroy the information on the magnetic storage medium, which wastes electric energy and shortens the service life of the degaussing machine. The method has additional management overhead and reduces the operating efficiency of the degaussing machine

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