Device for monitoring an enclosure, in particular the hold of an aircraft
First Claim
Patent Images
1. Device for monitoring an enclosure, comprising:
- at least one sensor located to monitor the enclosure, the sensor comprising a CCD camera of very short spectral band lying between 0.4 μ
m and 1.1 μ
m, fitted with an infrared filter eliminating the spectral band lying between around 0.4 μ
m and 0.8 μ
m, this sensor being associated with an image processing computer having a display screen and a control board.
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Abstract
This device comprises at least one sensor of a CCD camera of very short spectral band lying between 0.4 μm and 1.1 μm, fitted with an infrared filter eliminating the spectral band lying between around 0.4 μm and 0.8 μm, this sensor being associated with a computer catering in particular for image processing, at least one display screen and a control board. It is thus possible, with the aid of a single type of sensor, to detect hot spots, flames, smoke and the shifting of objects, and to provide a visualization of the inside of the enclosure.
21 Citations
15 Claims
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1. Device for monitoring an enclosure, comprising:
- at least one sensor located to monitor the enclosure, the sensor comprising a CCD camera of very short spectral band lying between 0.4 μ
m and 1.1 μ
m, fitted with an infrared filter eliminating the spectral band lying between around 0.4 μ
m and 0.8 μ
m, this sensor being associated with an image processing computer having a display screen and a control board. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- at least one sensor located to monitor the enclosure, the sensor comprising a CCD camera of very short spectral band lying between 0.4 μ
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15. Device for monitoring an enclosure, in particular the hold of an aircraft, characterized in that it (1) comprises at least one sensor comprising a CCD camera of very short spectral band lying between 0.4 μ
- m, fitted with an infrared filter eliminating the spectral band lying between around 0.4 μ
m and 0.8 μ
m, this sensor being associated with an image processing computer having a display screen and a control board, (2) compares two images, one of which constitutes a reference image, which are acquired successively so as to detect variations in the position of the objects lying in the field of view of each camera, (3) analyzes a histogram of the grey levels of an image provided by a camera with counting of the points having a level higher than a predetermined threshold and forming a connected region of the image, so as to deduce therefrom the existence and the extend of a zone of fire, and (4) analyzes a distribution of the gray levels as well as the number of classes present in each image delivered by a camera so as to detect the possible presence of smoke.
- m, fitted with an infrared filter eliminating the spectral band lying between around 0.4 μ
Specification