Infrared fire detection system
AssigneeHoneywell International Inc.
InventorBarrett E. Cole
Life of this patent
Estimating the term…
Abstract
An infrared detection system that may note changes of temperature over time in various fields of view of a scene. The system may use an array of long wave infrared detectors to sense early or late stages of a fire. The system may check numerous fields of view. It may have a fixture with a lens for each field of view. Each lens may have its respective field of view focused on the array. All but one lens may be shuttered or closed from detecting its respective field of view at a time. The system may have a processor with a memory to record the temperatures from the array over time. Variation of temperature in one spot or another of a field of view may be an indication of an imminent fire or another situation of concern.
Claims20
A system for detecting a low level of combustion, comprising:
- a sensor;
- and
- a structure attached to the sensor, for providing one field of view at a time from a plurality of fields of view to the sensor;
- and
- wherein the sensor is for detecting LWIR radiation.
A fire detection system comprising:
- a structure having a plurality of lenses;
- a sensor attached to the structure;
- and
- a lens selector connected to the structure;
- and
- wherein:
- each lens is for providing a field of view to the sensor;
- and
- the lens selector is for selecting one lens to provide a field of view to the sensor.
An infrared fire detector comprising:
- a sensor;
- and
- a mechanism for providing one field of view at a time from a scene to the sensor;
- and
- wherein:
- the sensor is for sensing an infrared image from a field of view;
- and
- the mechanism for providing one field of view at a time has a lens arrangement for providing two or more fields of view of the scene.
Dependencies are inferred from the claim text.