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Fire alarm system

  • US 6,239,697 B1
  • Filed: 06/15/1999
  • Issued: 05/29/2001
  • Est. Priority Date: 06/15/1998
  • Status: Expired due to Fees
First Claim
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1. A fire alarm system comprising:

  • a plurality of fire supervising or control terminals serving as fire detectors and having identification number information assigned thereto that varies depending on the type of a terminal; and

    a reception unit connected to said plurality of fire supervising or control terminals;

    said reception unit comprising;

    a nonvolatile memory for storing therein the identification number information of said plurality of terminals connected to said reception unit;

    acquisition means for acquiring identification number information from said plurality of terminals;

    rewriting means for, in response to an instruction, storing the identification number information of said plurality of terminals acquired by said acquisition means in said nonvolatile memory so as to rewrite the contents of said nonvolatile memory, wherein said rewriting means comprises a mode setter for specifying a non-acquisition mode in said nonvolatile memory when the identification number information acquired by said acquisition means is stored in said nonvolatile memory in order to rewrite the contents of said nonvolatile memory; and

    mode judging means for, when said reception unit is powered or reset, judging if the non-acquisition mode has been specified in said nonvolatile memory, so that it carries out fire supervision according to the identification number information stored in said nonvolatile memory when the non-acquisition mode has been specified, but allows said acquisition means to acquire identification number information from said plurality of terminals, while carrying out fire supervision according to the acquired identification number information when the non-acquisition mode has not been specified.

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