US 12,449,308 B2
Portable biosensor for air sample
Kin Chiu Ng, Fresno, CA (US); and Subrata Sanyal, Eastvale, CA (US)
Filed by The United States of America, as represented by the Secretary of the Navy, Crane, IN (US)
Filed on Mar. 20, 2023, as Appl. No. 18/123,679.
Claims priority of provisional application 63/321,398, filed on Mar. 18, 2022.
Prior Publication US 2023/0296526 A1, Sep. 21, 2023
Int. Cl. G01N 21/65 (2006.01); G01J 3/02 (2006.01); G01J 3/44 (2006.01); G01N 21/64 (2006.01); G06V 40/13 (2022.01)
CPC G01J 3/4412 (2013.01) [G01J 3/0202 (2013.01); G01J 3/0227 (2013.01); G01J 3/0229 (2013.01); G01J 3/0272 (2013.01); G01J 3/0275 (2013.01); G01J 3/0286 (2013.01); G01N 21/6486 (2013.01); G01N 21/65 (2013.01); G06V 40/1318 (2022.01); G01N 2201/0221 (2013.01); G01N 2201/06113 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A portable biosensor comprising:
a sample filter cartridge comprising a 30 μm pore size mesh filter, a 1.0 μm pore size coarse filter, a 0.5 μm pore size medium filter, and a molecular-sieve bead-column;
a first air passage;
a filter collector;
an optical sphere;
an electromagnetic radiation emitter;
a photo-detector configured to receive electromagnetic spectrum data;
a processor in electrical communication with said photo-detector to receive said electromagnetic spectrum data from said photo-detector;
a signal display in electrical communication with said processor and configured to provide an indication of said electromagnetic spectrum data;
a second air passage;
a vacuum pump for drawing an air sample from said sample filter cartridge, through said first air passage, said filter collector, said optical sphere, and said second air passage and out said vacuum pump;
a power supply in electrical communication with said electromagnetic radiation emitter, said photo-detector, said processor, said signal display, and said vacuum pump; and
a housing that is sized for portability of said biosensor for field use.