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1.
公开(公告)号:EP2075773B1
公开(公告)日:2012-01-25
申请号:EP08172365.2
申请日:2008-12-19
CPC分类号: G08B13/04 , G08B13/1672 , G08B29/046
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2.
公开(公告)号:EP2075773A1
公开(公告)日:2009-07-01
申请号:EP08172365.2
申请日:2008-12-19
CPC分类号: G08B13/04 , G08B13/1672 , G08B29/046
摘要: A tamper detection apparatus includes a housing defining an internal cavity. A sensing device embodied as a microphone is positioned within the internal cavity of the housing, which may also be a protective grommet. A conductive element spans the internal cavity and is positioned in front of the microphone. The conductive element initiates a fault signal when a specified electrical condition is met to indicate a tampering or an attempted tampering with the microphone. The specified electrical condition may include an open circuit or a short circuit. The conductive element is in the form of a membrane or wire mesh.
摘要翻译: 篡改检测装置包括限定内腔的壳体。 实现为麦克风的感测装置定位在壳体的内部空腔内,其也可以是保护索环。 导电元件跨越内部空腔并位于麦克风的前面。 当满足指定的电气条件以指示篡改或尝试篡改麦克风时,导电元件启动故障信号。 指定的电气条件可能包括开路或短路。 导电元件是膜或丝网的形式。
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