Security system


A security system for protecting the enclosure of a security safe comprising a cavity wall 10 having inner and outer metal skins 11,12. A transmitter (20 Fig 2, not shown) launches microwave radiation into the cavity 13 between the metal skins and a receiver (30) monitors the radiation to detect penetration of the outer metal skin. The monitoring means either monitors the level of radiation or detects for doppler modulation. <IMAGE>




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Patent Citations (4)

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NO-Patent Citations (0)


Cited By (5)

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    CN-100451290-CJanuary 14, 2009温科尼克斯多夫国际有限公司Valuable case designed to receive valuable documents provided with a safety device
    GB-2320349-AJune 17, 1998Ncr Int IncSecurity enclosure such as a safe
    US-6515574-B1February 04, 2003Neopost LimitedTamper detection
    US-7395766-B2July 08, 2008Wincor Nixdorf International GmbhValuables case for holding securities with a safety device
    WO-2005078225-A1August 25, 2005Wincor Nixdorf International GmbhValuable case designed to receive valuable documents provided with a safety device