Method and device for detecting smoke and/or fire in rooms
First Claim
1. A method for detecting smoke and/or fire in rooms, comprising the steps of:
- recording at least one image of the room;
digitalizing the at least one image of the room to a digitalized image;
comparing the digitalized image to a reference image in digitalized form which reference image is generated based on an image of the room previously recorded and digitalized;
determining the sum of image elements of the digitalized image deviating by at least one first threshold value from the reference image; and
generating an alarm signal when the sum reaches or surpasses a second threshold value.
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Abstract
In a method for detecting smoke or fire in rooms, at least one image of the room is recorded and digitalized to a digitalized image. The digitalized image is compared to a reference image in digitalized form, wherein the reference image is generated based on an image of the room previously recorded and digitalized. The sum of image elements of the digitalized image deviating by at least one first threshold value from the reference image is determined. An alarm signal is generated when the sum reaches or surpasses a second threshold value. The device for performing the method has a video camera and a matching light source arranged in a dark field arrangement.
32 Citations
13 Claims
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1. A method for detecting smoke and/or fire in rooms, comprising the steps of:
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recording at least one image of the room;
digitalizing the at least one image of the room to a digitalized image;
comparing the digitalized image to a reference image in digitalized form which reference image is generated based on an image of the room previously recorded and digitalized;
determining the sum of image elements of the digitalized image deviating by at least one first threshold value from the reference image; and
generating an alarm signal when the sum reaches or surpasses a second threshold value. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A device for detection and indication of smoke and/or fine air in rooms, the device comprising:
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a computing unit;
at least one electro-optical device (13), for recording images of a room, connected to the computing device;
at least one light source (14) for illuminating the room, wherein the at least one electro-optical device (13) and the at least one light source (14) are positioned in a dark field arrangement relative to one another. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification