发明申请
US20070008125A1 Method of eliminating impact/shock related false alarms in an acoustical glassbreak detector 有权
在声学玻璃破碎探测器中消除冲击/冲击相关的假警报的方法

  • 专利标题: Method of eliminating impact/shock related false alarms in an acoustical glassbreak detector
  • 专利标题(中): 在声学玻璃破碎探测器中消除冲击/冲击相关的假警报的方法
  • 申请号: US10871386
    申请日: 2004-06-17
  • 公开(公告)号: US20070008125A1
    公开(公告)日: 2007-01-11
  • 发明人: Richard Smith
  • 申请人: Richard Smith
  • 主分类号: B60R25/10
  • IPC分类号: B60R25/10 G08B13/00
Method of eliminating impact/shock related false alarms in an acoustical glassbreak detector
摘要:
Apparatus for detecting the breaking of a contact-sensitive surface includes an acoustic, shock, and vibration transducer, a detector circuit responsive to the transducer for detecting an acoustic wave resulting from a contact force applied to the surface and generating a signal, a support for the transducer, and the means for disqualifying a contact force to the support as a breakage event that relies on differentiation of the speed with which a shock wave travels through a solid material versus the speed with which an acoustic wave travels through air. The transducer may include a front electret condenser microphone and in some preferred embodiments the microphone does not have a preamplifier associated therewith. The invention also includes the method for detecting the breaking of a contact-sensitive surface that includes providing an acoustic, shock, and vibration transducer, providing a support for the transducer, providing a detector circuit responsive to the transducer for detecting an acoustic wave resulting from a contact force applied to the surface and generating a signal; and providing means for disqualifying a contact force to the support as a breakage event that relies on differentiation of the speed with which a shock wave travels through a solid material versus the speed with which an acoustic wave travels through air.
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