Mwir sensor for flame detection
AssigneeHoneywell International Inc.
InventorsBarrett E. Cole, James Allen Cox, Kwong Au, Christopher Larsen
Life of this patent
Estimating the term…
Abstract
A system for detecting a flame. The system may discriminate between a detected hot object and flame. The system may be a camera-like structure incorporating an infrared sensor, a lens, and an element that could filter out some of the long-wave infrared radiation. The sensor may receive radiation of a scene which forms images on the sensor. The images may be provided to a processor that incorporates one or more modules to determine whether a flame is present in the scene.
Claims20
A flame detector comprising:
- an infrared sensor;
- a lens situated at a first distance from the infrared sensor;
- and
- a long wave infrared filter situated at a second distance from the infrared sensor;
- and
- wherein:
- infrared radiation from a scene promulgates through the lens and the filter, in either order, to the infrared sensor;
- and
- wherein long wave infrared radiation of the infrared radiation from the scene between the filter and the infrared sensor has a magnitude less than the magnitude of mid wave infrared radiation of the infrared radiation from the scene between the filter and the infrared sensor.
A method for detecting a flame, comprising:
- capturing a scene as images onto a bolometer sensitive to mid-wave infrared radiation;
- and
- processing the images to determine whether the images contain a flame.
A flame detection system comprising:
- a camera comprising:
- an uncooled infrared sensor;
- a lens for focusing an image of a scene onto the sensor;
- and
- an infrared filter, for filtering out long wave infrared radiation exceeding a predetermined magnitude, situated between the scene and the sensor;
- and
- a processor connected to the sensor.
Dependencies are inferred from the claim text.