Patent ID: 11961648
Assignee: BEIJING UNIVERSITY OF TECHNOLOGY
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A rapid demagnetization method based on characteristics of a magnetic media, comprising:
(S1) acquiring basic information of a magnetic medium to be demagnetized through a multi-source sensing mode integrated with a bar code scanning and an image acquisition by using a magnetic medium recognition module, wherein the basic information of the magnetic medium to be demagnetized comprises brand, type, capacity and production time; and recognizing the magnetic medium to be demagnetized through a data processing technology and a magnetic medium recognition algorithm to extract characteristic information of the magnetic medium to be demagnetized, wherein the characteristic information of the magnetic medium to be demagnetized comprises magnetic recording mode, material characteristic and coercive force;
(S2) optimizing demagnetization parameters for the magnetic medium to be demagnetized via a demagnetization parameter optimizing module based on a demagnetization optimizing model to obtain a set value of the demagnetization parameters, wherein the demagnetization parameters comprise intensity of a demagnetizing magnetic field and demagnetization angle; and
(S3) tracking the set value of the demagnetization parameters via a closed-loop control module of the demagnetizing magnetic field combined with domain expert knowledge based on a closed-loop control mechanism integrated with a magnetic field control algorithm, a charging and discharging device, a magnetic field generating device, a magnetic field sensor and an environmental sensor to realize a rapid demagnetization of the magnetic medium to be demagnetized.