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Alarm system

  • US 20070188321A1
  • Filed: 02/07/2005
  • Published: 08/16/2007
  • Est. Priority Date: 02/05/2004
  • Status: Active Grant
First Claim
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1. An alarm system (10) intended to trigger an alarm signal upon deviation from at least one environment-dependent reference predetermined for a specific environment, which alarm system (10) comprises at least one portable unit (12) intended to be placed in said environment, which unit (12) has a size not greater than a mobile telephone, which unit (12), each comprising a sensor system (14) comprising an accelerometer/silicon crystal, microphone and temperature sensor, a processor member (16) connected to the sensor system (14) and adapted for the comparison of signals received from the sensor system (14) and said predetermined environment-dependent reference/references, a communication member (18) of a unique identity connected to the processor member (16) and adapted for wireless communication upon, for instance, the triggering of an alarm signal, and a positioning member (20) connected to the processor member (16) and adapted to indicate, at least upon the triggering of an alarm signal, the position of said unit (12), which alarm system (10) furthermore comprises a memory member (24) connected to the processor member (16) via a distributed computer network (22) and adapted for the storage of said predetermined reference/references.

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