发明名称 |
METHOD OF DETECTING UNAUTHORISED ACCESS INTO PROTECTED FACILITIES |
摘要 |
FIELD: alarm systems. ^ SUBSTANCE: present invention pertains to security technology and can be used for detecting unauthorised access into protected facilities. The method is based on detecting changes in the parameter of an acoustic signal, propagated inside the protected facilities. The parameter used is reduction of the amplitude-frequency response at the fundamental resonance frequency of the facilities. ^ EFFECT: faster operation, increased immunity to thermal noise and accurate detection of unauthorised access. ^ 1 dwg |
申请公布号 |
RU2342707(C1) |
申请公布日期 |
2008.12.27 |
申请号 |
RU20070139836 |
申请日期 |
2007.10.26 |
申请人 |
GOSUDARSTVENNOE OBRAZOVATEL'NOE UCHREZHDENIE VYSSHEGO PROFESSIONAL'NOGO OBRAZOVANIJA KAZANSKIJ GOSUDARSTVENNYJ TEKHNICHESKIJ UNIVERSITET IM. A.N. TUPOLEVA |
发明人 |
SHCHEGLOV MIKHAIL JUR'EVICH;KEMENOV IGOR' VIKTOROVICH |
分类号 |
G08B13/00 |
主分类号 |
G08B13/00 |
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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