Fire detection system
January 14, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesEmergency detection alarm and evacuation system System for detecting a motion in the monitoring area of two or more television cameras Video monitoring system and method Surveillance method and apparatus Burner monitoring system Fire and explosion detection and suppression Fire alarm system Flame detector Device and installation for the instantaneous detection of one or more physical phenomena having a character of risk Method of image analysis in pulverized fuel combustion InventorsAssigneeApplicationNo. 641166 filed on 01/14/1991US Classes:348/159, Plural cameras169/61, Electrical control340/511, Threshold or window (e.g., of analog electrical level)340/514, Testing340/588, Time-temperature relationship (e.g., overtemperature exceeds predetermined interval or time-temperature integral)348/161, Object comparison (e.g., remote verification of signature, etc.)382/100APPLICATIONSExaminersPrimary: Peng, John K.Attorney, Agent or FirmInternational ClassH04N 007/18AbstractA fire detection system includes a color video camera, a frame grabber and a computer processor operative to store and examine a series of image frames of the viewed area. Ultraviolet and infrared detectors produce event signals when energy received exceeds predetermined thresholds. The processor then rapidly evaluates the images from the camera to determine bright area objects, their location, edge profile, edge flicker, stationarity and spectral characteristics as well as spectral flicker to confirm a fire event. Finally, the size of a confirmed fire image is measured as a final criterion for the release of fire suppressant material, either in a limited zone within which the fire is located or within the entire facility. | |
