METHOD AND DEVICE FOR DETECTION OF BIOLOGICAL MATERIAL Russian patent published in 2015 - IPC G01N15/14 G01N21/64 G01N21/53 

FIELD: instrumentation.

SUBSTANCE: invention relates to the method of detection of biological material in air flow, according to the method the air flow (16) is supplied by means of devices for samples (12), the light beam (17) is emitted in the direction of the air flow (16), the fluorescence signal (24) is emitted which describes fluorescence of the particle (14) and the signal of dispersion (32) is formed which describes dispersion of light by the particle (14). The fluorescence signal (24) and the dispersion signal (32) are converted into discrete values and the value of alarm signal is determined. Discrete values are registered cumulatively as coincidence points in two-dimensional space at least of 1 measurement with pre-selected measurements. At least one area of indexes (56, 58, 60) is pre-selected from the named space of measurements, a cumulative index at the index frequency is calculated by the coincidence points accumulated in each pre-selected area of indexes (56, 58, 60), the value of alarm signal reflecting the presence of the selected biological material is determined by the named indexes by means of pre-selected criterion.

EFFECT: invention allows to simplify the device for detection of biological material.

14 cl, 5 dwg