Method and apparatus for detection of hazardous or potentially hazardous conditions

• US 7,619,534 B2
• Filed: 09/18/2006
• Issued: 11/17/2009
• Est. Priority Date: 06/23/2006
• Status: Expired due to Fees

• Current Assignee: Tyco Fire & Security GmbH (Johnson Controls International plc)
• Original Assignee: Simplexgrinnell LP (Johnson Controls International plc)
• Inventors: Brighenti, Donal D., Barrieau, Mark P.
• Primary Examiner(s): Wu; Daniel
• Assistant Examiner(s): Fan; Hongmin
• Application Number:
  US11/522,671
• Publication Number:
  US 20070296570A1
• Time in Patent Office: 1,156 Days
• Field of Search: 340/525, 340/521, 340/577, 340/628, 700/245, 700/253
• US Class Current: 340/577
• 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 17/12 Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
• CPC Class Codes: G08B 29/188 Data fusion; cooperative systems, e.g. voting among different detectors

Abstract

A fire alarm system includes a fire alarm control panel (FACP) and an addressable signaling line circuit (SLC) operably coupled to the FACP for communicating with addressable components, including a plurality of sensors. The sensors can include a plurality of atmospheric sensors operably coupled to the SLC and each configured to provide information about their local atmospheric environment. Also provided is a mobile robot addressable and dispatchable by the fire alarm control panel (FACP) to an area indicated by sensors that are detecting a hazardous or potentially hazardous condition. The robot has mobile sensors that are configured to obtain verification of the hazardous or potentially hazardous condition and the robot is further configured to communicate the verification to the FACP.

Claims

1. A fire alarm system comprising:

a fire alarm control panel (FACP);

an addressable signaling line circuit (SLC) operably coupled to the FACP for communicating with addressable components, including a plurality of sensors;

a plurality of atmospheric sensors operably coupled to the SLC and each configured to provide a potential hazard signal representative of a potentially hazardous condition, wherein said plurality of atmospheric sensors comprise magnetically activated switches; and

a mobile robot configured to be addressed and dispatched by said fire alarm control panel (FACP) when the sensors generate the potential hazard signal, to an area indicated by said sensors detecting the potentially hazardous condition, the FACP dispatching the mobile robot to the area before the FACP activates a pre-set alarm, said robot having mobile sensors configured to obtain verification of the potentially hazardous condition, said mobile sensors comprising a magnet configured to activate said magnetically activated switches, to communicate a mobile sensor signal verification to the FACP, the FACP issuing an alarm signal when the FACP receives the mobile sensor signal verification.

2. A system in accordance with claim 1 wherein said robot further comprises a mobile combination sensor on a telescoping pole, said mobile combination sensor deployable to ceiling level.

3. A system in accordance with claim 1 wherein said robot further is supplied with an extinguishing agent and a mobile sensor configured to find a source of combustion, and said robot is configured to extinguish the source of combustion using said extinguishing agent.

4. A system in accordance with claim 1 wherein said atmospheric sensors further comprise a homing signal emitter and said robot further comprises a mobile detector configured to detect a homing signal emitted by said homing signal emitter so that the robot can navigate to the location of at least one of the atmospheric sensors.

5. A system in accordance with claim 4 wherein said homing signal emitter emits an ultrasonic homing signal.

6. A system in accordance with claim 1 installed in a building and further wherein rooms of said building are provided with door ports or openings through which said robot can insert a mobile sensor.

7. A system in accordance with claim 6 wherein access to said rooms is provided by a door key system, wherein said door key system is configured to grant access to said robot when smoke is detected by said robot.

8. A system in accordance with claim 1 wherein said robot further comprises a camera configured to record all or some of the actions of said robot.

9. A system in accordance with claim 1 wherein said robot is provided with mobile sensors configured to follow guide markers.

10. A system in accordance with claim 9 wherein said guide markers comprise ultraviolet (UV) colored tracks, and said mobile sensors configured to follow guide markers comprise mobile UV sensors.

18. A system in accordance with claim 1 wherein said pre-set alarm represents a point at which the FACP issues an alarm to an external emergency service.

11. A mobile robot addressable and dispatchable by a fire alarm control panel (FACP) to an area indicated by local atmospheric sensors each configured to provide a potential hazard signal representative of a potentially hazardous condition, said robot configured to be addressed and dispatched by the FACP, when the sensors generate the potential hazard signal, to an area before said FACP activates a pre-set alarm, said robot having mobile sensors configured to obtain verification of the potentially hazardous condition and further configured to communicate the mobile sensor verification to the FACP, said mobile sensors including a magnet configured to activate magnetically activated switches to send a mobile sensor signal verification to the FACP, the FACP issuing an alarm signal when the FACP receives the mobile sensor signal verification.

12. A robot in accordance with claim 11 wherein said mobile sensors further comprise a mobile sensor configured to obtain verification of an obscuration condition.

13. A robot in accordance with claim 11 wherein said robot further comprises a mobile combination sensor on a telescoping pole, said mobile combination sensor deployable to ceiling level.

14. A robot in accordance with claim 11 wherein said robot further is supplied with an extinguishing agent and a mobile sensor configured to find a source of combustion, and said robot is configured to extinguish the source of combustion using said extinguishing agent.

15. A robot in accordance with claim 11 wherein at least one atmospheric sensor comprises a homing signal emitter, said robot further comprises a mobile detector configured to detect a homing signal emitted by the homing signal emitter so that the robot can navigate to the location of the at least one atmospheric sensor.

16. A method for detecting a hazardous or potentially hazardous condition, said method comprising:

detecting a signal from a sensor capable of providing a potential hazard signal representative of a potentially hazardous condition;

dispatching a mobile robot to a room in which the potential hazard signal was received to verify the potentially hazardous condition before the FACP activates a pre-set alarm; and

using mobile sensors on the mobile robot to confirm that the potentially hazardous condition does or does not exist, the mobile sensors including a magnet configured to activate magnetically activated switches to communicate a mobile sensor verification to the FACP, the FACP issuing an alarm when the FACP receives the mobile sensor verification.

17. A method in accordance with claim 16 wherein the hazardous or potentially hazardous condition is an early stage of a fire, and said method further comprises utilizing mobile sensors on the robot to locate the fire or smoldering embers, and expelling an extinguishing agent from the robot in the direction of the fire or the smoldering embers.