Audible fire alarm apparatus

• US 5,696,487 A
• Filed: 02/16/1995
• Issued: 12/09/1997
• Est. Priority Date: 02/16/1995
• Status: Expired due to Fees

• Current Assignee: G World Company Limited
• Original Assignee: Pyeong-Hwa Electronic Co.
• Inventors: Choi, Hong-Seok
• Primary Examiner(s): Hofsass, Jeffery
• Assistant Examiner(s): Pope, Daryl C.
• Application Number:
  US08/389,908
• Time in Patent Office: 1,027 Days
• Field of Search: 340/692, 340/331, 340/532, 379/37, 379/43, 379/38
• US Class Current: 340/532
• CPC Class Codes: G08B 17/00 Fire alarms; Alarms responsive to explosion
• CPC Class Codes: H04M 11/045 using recorded signals, e.g. speech

Abstract

The audible alarm apparatuses include fire sensing portion, location setting portion for setting a location of the fire sensing portion, system controller for providing information about the location of the fire outbreak and controlling interface devices, DTMF generator, DTMF receiver, voice data storage portion responsive to the information outputted from the system controller for providing a voice data, parallel to serial converter, digital to analog converter, and amplifier, etc. The apparatuses give and take the information about the location of the fire outbreak directly with each other via a telephone line without a host computer.

Claims

1. An audible alarm apparatus comprising:

fire sensing means, including a fire sensor for detecting a fire outbreak and a switching means responsive to a signal detected from said fire sensor for outputting the signal when the voltage level of the signal is more than a predetermined amount,

location setting portion for setting a location in which said fire sensing means is positioned and outputting an information data for a location in which a fire is generated,

system controller responsive to the signal outputted from said switching means for determining the fire outbreak, for providing information data about the location of the fire outbreak being set in the location setting means to an input and output controlling portion, and controlling interface devices when the fire outbreak location has been received via said input and output controlling portion,

DTMF generator for converting the fire outbreak data outputted from said system controller and its associated location information data to dial tone frequency signal and for providing the dial tone frequency signal to telephone line connecting portion,

DTMF receiver for receiving the dial tone frequency signal associated with the fire outbreak data and its associated location information data via said telephone line connecting portion,

voice data storage portion responsive to the information data outputted from said system controller for providing a voice data written in specified address area,

parallel to serial converter for converting parallel data which is read from said voice data storage portion and voice-synthesized in the system controller, to serial data, and for providing the serial data to D/A converter,

digital to analog converter for converting digital data outputted from said parallel to serial converter to analog signal and for providing the analog signal to an amplifier, and

amplifier for providing to speaker voice signal after noise is eliminated.

2. The audible alarm apparatus of claim 1 characterized in that said voice data storage portion includes one or more dependently connected memories so that in response to the information outputted from the system controller, voice data is read and the voice data is transferred into a data input port of the system controller via data bus.

3. An audible alarm system comprising at least two audible alarm apparatuses as defined in claim 1 which are directly connected via telephone lines.