FIELD: gas industry.
SUBSTANCE: invention relates to gas detection systems and methods, in particular to systems for gas leak detection and methods for detection of gas leaks from equipment. The system for detection of given target gas in an observed area contains: an assembled infrared camera (hereinafter – IR camera) made with the possibility of reception of infrared images (hereinafter – IR images) of the observed area with a given frame rate; a backlight device made with the possibility of emission of photons with a given wavelength at or near an absorption wavelength of given target gas, the backlight device emits strobing pulses with a given strobing frequency, switching between an on state and an off state, wherein the strobing frequency of the backlight device correlates with the given frame rate of the IR camera, so that the IR camera receives active IR images, when the backlight device is in the on state, and passive IR images, when the backlight device is in the off state, what happens alternately with the given frame rate; a data processing device containing a data storage device made with the possibility of storage of one preceding IR image received by the IR camera, wherein the preceding IR image is an active or passive IR image, and at least one processor made with the possibility of comparison of the current IR image with the preceding IR image stored on the data storage device and generation of an output signal upon the fact of the specified comparison, wherein the current IR image is a passive or active IR image, wherein the output signal indicates a magnitude of a photon flux absorbed by given target gas; a display made with the possibility of display of an output image based on the output signal generated by the data processing device to provide the detection of specific given target gas during operation; and a manual camera case, wherein at least the assembled IR camera and the data processing device are located in the manual camera case.
EFFECT: increase in the detection accuracy.
37 cl, 7 dwg
