| 摘要 |
FIELD: information technology. ^ SUBSTANCE: heat imaging channel has a lens in whose focal plane there is a matrix photodetector whose outputs are connected to corresponding inputs of a multichannel preamplifier, series-connected analogue-to-digital converter, multiplexer, video processor and video signal output unit, as well as a first control unit connected between the control input of the matrix photodetector and the first control output of the video processor, the second control output of which is connected to the control input of the multiplexer, also includes a multichannel differential amplifier connected between the multichannel preamplifier and the analogue-to-digital converter, as well as a second and a third control unit, wherein the third and fourth control outputs of the video processor are connected through the second and third control units to the first and second control inputs of the multichannel differential amplifier, respectively. The video processor is adapted to determine the dynamic range of variation of values and the average value of the digital signal in a two-dimensional data array corresponding to the heat imaging frame. ^ EFFECT: high reliability of detecting heat objects. ^ 1 dwg |
