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    • 4. 发明申请
    • SYSTEM AND METHOD FOR MAGNETIC ASSESMENT OF BODY IRON STORES
    • 机体磁体储存系统及方法
    • WO2016081833A3
    • 2016-09-09
    • PCT/US2015061851
    • 2015-11-20
    • DARTMOUTH COLLEGE
    • DIAMOND SOLOMON GFICKO BRADLEY W
    • G01R33/16A61B5/05G01N27/72
    • G01R33/1207G01R33/12
    • A system for magnetic assessment of body iron stores includes excitation coils adapted to generate multiple-frequency alternating current (AC) magnetic fields and to partially magnetically saturate iron. The system further includes one or more detection coils adapted to detect the AC magnetic fields. A signal processor uses lock- in amplifiers and linear regression to measures changes to the multiple-frequency AC magnetic fields caused by proximity to iron. A method for magnetic assessment of body iron stores includes generating multiple-frequency AC magnetic fields and detecting changes to the AC magnetic fields caused by proximity to iron. The method further includes partially magnetically saturating iron, thereby generating non- linear responses, harmonic frequencies, and intermodulation frequencies.
    • 用于身体铁店的磁性评估的系统包括适于产生多频交流(AC)磁场并部分地使铁饱和的励磁线圈。 该系统还包括适于检测AC磁场的一个或多个检测线圈。 信号处理器使用锁定放大器和线性回归来测量由接近铁引起的多频交流磁场的变化。 一种用于身体铁存储器的磁性评估的方法包括产生多频交流磁场并检测由靠近铁引起的交流磁场的变化。 该方法还包括部分磁饱和铁,从而产生非线性响应,谐波频率和互调频率。
    • 6. 发明申请
    • METHOD AND APPARATUS FOR TESTING METAL TAPES
    • 用于测试金属带的方法和装置
    • WO1980001843A1
    • 1980-09-04
    • PCT/US1980000141
    • 1980-02-11
    • OTIS ELEVATOR CO
    • OTIS ELEVATOR COWEISCHEDEL H
    • G01N27/72
    • G01R33/1207G01N27/82
    • Magnetic flux is induced in the tape (10) by applying a magnetic field to the tape. Where there is a perforation (12) or a crack (14) air gaps are created and magnetic flux (15, 18) radiates outwardly from the tape across these air gaps. The presence of the crack (14) is detected by sensing the radiating flux (15, 18) at two distances from the tape. At one distance (30), close to the tape, the total flux is the sum of the flux from the crack and the perforation. At the other distance (32), further from the tape, the flux is solely that produced by the perforation. A coil (36, 38) is placed at each position to sense the flux. The tape (10) is moved, which causes the flux (15, 18) to intersect the coils (36, 38). The intersection produces an output signal (40) from each coil (36, 38). The signal (40) produced by the coil (38) further from the tape is subtracted from the signal (40) produced by the coil (36) closer to the tape; the difference being a signal (58) caused by the additional flux produced by the crack (14). An alarm (94) is sounded and an indicator (88) lights when the signal is present.
    • 8. 发明申请
    • 磁気記録媒体の評価方法および製造方法
    • 磁记录介质评估方法和制造方法
    • WO2009142234A1
    • 2009-11-26
    • PCT/JP2009/059258
    • 2009-05-20
    • 昭和電工株式会社福島 正人
    • 福島 正人
    • G11B5/84
    • G11B5/855G01R33/1207
    •  ディスクリート方式、または、ビットパターン方式の磁気記録媒体で、表面に凹凸が残存してもヘッドの浮上特性が安定し、高記録密度に対応できる磁気記録媒体を高い生産効率で提供することのできる磁気記録媒体の評価方法が提供される。そのような評価方法は、円盤状基板の少なくとも一方の表面に磁気記録パターンを有し、前記磁気記録パターンに対応した凹凸を表面に有する磁気記録媒体の評価方法であって、回転させた前記磁気記録媒体の表面にセンサーを取り付けたヘッドスライダを浮上走行させ、前記ヘッドスライダと前記磁気記録媒体とが非接触状態で前記センサーから出力される信号を検知し、この信号から前記磁気記録媒体の良否を判断することを特徴とする。
    • 提供了一种能够以高生产效率提供具有稳定头悬浮特性的离散型或位图型磁记录介质的磁记录介质评估方法,即使表面上仍存在不规则性并且能够应对高记录密度 。 评价方法是在盘状基板的至少一个表面上具有磁记录图案的磁记录介质的评价方法,其具有与表面上的磁记录图案对应的凹凸。 该方法包括以下步骤:从旋转的磁记录介质的表面悬浮传感器附着的磁头滑块,滑动磁头滑块,检测从磁头滑动器和磁记录介质的传感器输出的信号 处于非接触状态,并根据该信号确定磁记录介质是否良好。