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.
Claims12
A fire sensing device, comprising:
- a camera configured to capture an image of an environment;
- an infrared (IR) sensor;
- and
- a controller configured to:
- convert the image from red, green, and blue color space to a number of hue saturation values;
- determine whether the image includes an IR body by comparing the number of hue saturation values of the image to a number of hue saturation values of an image without an IR emitting body, wherein the image without the IR emitting body has no radiation;
- determine, responsive to determining the image does not include an IR body, the image has no radiation;
- and
- initiate calibration of the IR sensor responsive to determining the image has no radiation.
A method for calibrating a fire sensing device, comprising:
- capturing an image of an environment using a camera of the fire sensing device;
- converting the image from a red, green, and blue color space to a first number of hue saturation values;
- determining whether the image includes an infrared (IR) body by comparing the first number of hue saturation values of the image to a number of hue saturation values of an image without an IR emitting body, wherein the image without the IR emitting body has no radiation;
- determining, responsive to determining the image does not include an IR body, the image has no radiation;
- and
- calibrating an IR sensor of the fire sensing device responsive to determining the image has no radiation.
A fire sensing device, comprising:
- a camera configured to capture an image of an environment;
- an infrared (IR) sensor;
- and
- a controller configured to:
- convert the image from a red, green, and blue color space to a number of hue saturation values;
- determine whether the image includes an IR body by comparing the number of hue saturation values of the image to a number of hue saturation values of an image without an IR emitting body, wherein the image without the IR emitting body has no radiation;
- determine, responsive to determining the image does not include an IR body, the image has no radiation;
- initiate calibration of the IR sensor responsive to determining the image has no radiation;
- and
- predict an end of life of the IR sensor based on calibration frequency of the IR sensor.
Dependencies are inferred from the claim text.