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Method for using an IR camera as a fire detector

IP.com Disclosure Number: IPCOM000008396D
Publication Date: 2002-Jun-11
Document File: 2 page(s) / 52K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for using an infrared (IR) camera as a fire detector. Benefits include improved functionality.

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Method for using an IR camera as a fire detector

Disclosed is a method for using an infrared (IR) camera as a fire detector. Benefits include improved functionality.

Background

              Conventional fire detection methods depend on the detection of smoke or heat. They are, therefore, limited to applications where the detector is close to the fire. Furthermore, current fire detection methods may be impractical in areas where the smoke or heat from a fire is rapidly dispersed, such as outdoors or in a windy environment.

              A typical video camera contains a sensor that filters out IR light.

Description

              The disclosed method is a modified video camera connected to a computer system running an application that detects the presence of a flame by analyzing the video image (see Figure 1). The camera is modified to allow infrared light to pass while all other light is filtered out.

              The application processes the video stream and analyzes it for properties distinctive of a flame. These properties may include varying locations and varying intensities of light within the field of view. A current frame is analyzed and compared to a previous frame or collection of frames. Changes between frames are detected and compared to changes exemplary of the distinctive properties of a flame.

Advantages

              The disclosed method enables the fire detector to remain remote from the fire and is unaffected by wind. Possible applications include outdoor fire detection (such as the U.S. Forest Service) and factories with hi...