Fire Detection

• US 20120229283A1
• Filed: 03/07/2011
• Published: 09/13/2012
• Est. Priority Date: 03/07/2011
• Status: Active Grant

• Current Assignee: Attentis Pty Limited
• Original Assignee: Flamesniffer Pty., Ltd.
• Inventors: MCKENNA, Cameron
• Granted Patent: US 8,907,799 B2
• Time in Patent Office: Days
• US Class Current: 340/584
• CPC Class Codes: G08B 17/06 Electric actuation of the alarm, e.g. using a thermally-operated switch
• CPC Class Codes: G08B 17/10 Actuation by presence of smoke or gases , e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
• CPC Class Codes: G08B 17/113 Constructional details
• CPC Class Codes: G08B 17/125 by using a video camera to detect fire or smoke
• CPC Class Codes: G08B 25/10 using wireless transmission systems G08B25/009 takes precedence
• CPC Class Codes: G08B 29/183 Single detectors using dual technologies G08B13/1672, G08B13/2448, G08B13/2494 take precedence

Abstract

A sensor unit comprising a heat resistant shell, the shell having a plurality of viewing windows spaced around the shell exterior to define a 360° view around the unit, each viewing window being optically coupled to an infrared pyroelectric sensor and an infrared thermopile sensor, the interior of the shell defining a chamber containing at least two different smoke detectors, the shell having ventilation holes communicating with the chamber and temperature sensors mounted on the unit, the shell housing at least one printed circuit board coupled to the sensors and detectors and supporting a computer and radio transmitter, and a rechargeable power source powering the printed circuit board.

Claims

1. A sensor unit comprising a heat resistant shell, the shell having a plurality of viewing windows spaced around the shell exterior, each viewing window being optically coupled to a sensor within the shell that optically senses fire, the interior of the shell defining a chamber containing at least one smoke detector, and a temperature sensor mounted on or in the unit, the shell housing a radio transmitter arranged to transmit signals actuated by one or more of the fire sensor, smoke detector or temperature sensor.

2. The sensor unit according to claim 1 wherein the fire sensor, smoke detector and temperature sensor are coupled to a printed circuit board supporting a computer arranged to transmit signals from the radio transmitter.

3. The sensor unit according to claim 2 wherein a solar panel is secured to the exterior of the sensor unit to recharge a power source powering the printed circuit board.

4. The sensor unit according to claim 1 wherein four windows are equally spaced around the shell.

5. A sensor unit according to claim 1 including an adjustable pulsing means to switch on the sensors and detectors at predetermined intervals.

6. The sensor unit according to claim 1 wherein an anemometer is secured to the unit to measure the direction and speed of wind outside the unit.

8. A system to monitor and detect fires comprising a plurality of sensors according to claim 1 electronically coupled in a network to provide a signal indicating the presence and location of a fire in real time.

9. The system according to claim 8 wherein the network includes a command center.

7. A sensor unit comprising a heat resistant shell, the shell having a plurality of viewing windows spaced around the shell exterior to define a 360°

view around the unit, each viewing window being optically coupled to an infrared pyroelectric sensor and an infrared thermopile sensor, the interior of the shell defining a chamber containing at least two different smoke detectors, the shell having ventilation holes communicating with the chamber and temperature sensors mounted on the unit, the shell housing at least one printed circuit board coupled to the sensors and detectors and supporting a computer and radio transmitter, and a rechargeable power source powering the printed circuit board.