SYSTEM OF OPERATIVE DIAGNOSTICS OF BIOLOGICAL CONTAMINATION OF AIR IN VENTILATION DUCTS OF BUILDINGS AND STRUCTURES Russian patent published in 2004 - IPC

FIELD: environmental monitoring, proximate method of control over quality of air in ventilation ducts of buildings and structures for detection of finely divided organic powders and aerosols carrying pathogenic microorganisms dusted in them. SUBSTANCE: system includes optical fibers, beam splitters, inlet channels coupled to diagnostic center and meant for input of monochromatic radiation of laser into optical fibers to excite light signals of scattering and fluorescence in points of control in case of detection of dusted finely divided organic substances, exit channels intended for transportation of excited signals of scattering and fluorescence for their transmission to proper photodetectors of diagnostic center, unit making decision on basis of amplitude evaluation of received excited signals of scattering and integrated evaluation of received excited signals of fluorescence in fluorescence band and generating diagnostic signals of biological contamination of air in each point of control as DETECTED or NOT DETECTED. EFFECT: provision for operative diagnostics of biological contamination of air in assemblage of points of control in ventilation ducts of buildings and structures. 1 dwg