发明名称 |
SYSTEMS AND METHODS FOR VERIFICATION OF SECURITY TAG DETACHMENT |
摘要 |
Systems (100) and methods (1400) for verifying a detachment of a security tag (108) from an article. The methods comprise: producing by a detaching unit (106) a first signal at a first frequency and a second signal at a second frequency when the security tag is in proximity thereto; generating, by a non-linear electrical circuit (504) of the security tag, a third signal from the first and second signals applied thereto; ceasing generation of the third signal by the non-linear electrical circuit when at least a first portion (306) of the security tag is moved a certain distance from the detaching unit; and determining by the detaching unit that the first portion of the security tag has been decoupled from a second portion (318) of the security tag when the third signal is no longer being generated by the non-linear electrical circuit. |
申请公布号 |
CA2909618(A1) |
申请公布日期 |
2014.10.09 |
申请号 |
CA20142909618 |
申请日期 |
2014.03.11 |
申请人 |
TYCO FIRE & SECURITY GMBH |
发明人 |
HALL, STEWART E.;MAITIN, STEVEN R. |
分类号 |
G08B13/24;E05B73/00 |
主分类号 |
G08B13/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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