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    • 4. 发明公开
    • Amorphous magnetostrictive alloy and an electronic article surveillance system employing same
    • 在使用这种合金的非晶合金magnetoresistriktive和电子物品监视系统
    • EP1562160A1
    • 2005-08-10
    • EP05010323.3
    • 1998-07-01
    • Vacuumschmelze GmbH & Co. KG
    • Herzer, Giselher
    • G08B13/24
    • G08B13/2408G08B13/244G08B13/2442G08B13/2488Y10S29/095Y10S148/003
    • A resonator for use in a marker in a magnetomechanical electronic article surveillance system is composed of an amorphous magnetostrictive alloy containing iron, cobalt, nickel, silicon and boron in quantities for giving the resonator a quality Q which is between about 100 and 600. When the resonator is excited to resonate by a signal emitted by the transmitter in the surveillance system, it produces a signal at a mechanical resonant frequency f r which can be detected by the receiver of the detection system. Due to the resonator having a quality Q in the above range, a signal is produced having an amplitude at approximately 1ms after excitation which is no more than 15 dB below an amplitude of the signal immediately after excitation and having an amplitude at approximately 7 ms after excitation which is at least 15 dB below said amplitude at 1 ms after excitation.
    • 在磁机械电子物品监视系统中的标记中使用的谐振器是由含有铁,钴,镍,其量硅和硼用于给出谐振器质量Q的无定形磁致伸缩合金的所有其是介于约100和600当 谐振器被激励,通过在监视系统中的发射器所发射的信号进行谐振,它在其可以通过检测系统的接收器检测的机械共振频率fr产生一个信号,由于具有在上述一个质量Q的谐振器 范围,则产生的信号具有振幅在大约激发后1毫秒所有这些是不超过15分贝下方的信号的振幅激发后立即和具有激发后振幅在约7毫秒的所有其至少15分贝低于所述振幅在 激发后1毫秒。