Calibrating an infrared (ir) sensor in a fire sensing device
AssigneeHoneywell International Inc.
InventorsVyshnavi Rajesh, Agnel Anto
Life of this patent
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Abstract
Devices, methods, and systems for calibrating an infrared (IR) sensor in a fire sensing device are described herein. One device includes a camera configured to capture an image of an environment, an IR sensor configured to detect a radiation level of the environment, and a controller configured to compare a radiation level of the image of the environment captured by the camera to the radiation level of the environment detected by the IR sensor and calibrate the IR sensor based on the comparison.
Claims20
A fire sensing device, comprising:
- a camera configured to capture an image of an environment;
- an infrared (IR) sensor configured to detect a radiation level of the environment;
- and
- a controller configured to:
- compare a radiation level of the image of the environment captured by the camera to the radiation level of the environment detected by the IR sensor;
- and
- calibrate the IR sensor based on the comparison.
A method for calibrating a fire sensing device, comprising:
- determining an environment has a radiation level equal to or less than a threshold radiation level based on an image captured by a camera of a fire sensing device;
- comparing, responsive to determining the environment has a radiation level equal to or less than the threshold radiation level, the radiation level to a radiation level of the environment detected by an infrared (IR) sensor of the fire sensing device;
- and
- calibrating the IR sensor based on the comparison.
A fire sensing device, comprising:
- a camera configured to capture an image of an environment;
- an infrared (IR) sensor configured to detect a radiation level of the environment;
- and
- a controller configured to:
- determine whether a radiation level of the image of the environment captured by the camera is equal to or less than a threshold radiation level;
- determine, responsive to the radiation level of the image of the environment captured by the camera being equal to or less than the threshold radiation level, an offset between the radiation level of the image of the environment captured by the camera and the radiation level of the environment detected by the IR sensor;
- and
- calibrate the IR sensor based on the determined offset.
Dependencies are inferred from the claim text.