US 12,228,453 B2
Hazardous ingredient measuring apparatus and hazardous ingredient analyzing system using same
Do Yeon Pi, Seoul (KR)
Assigned to PIQUANT. CO., LTD., Seoul (KR)
Filed by PIQUANT. CO., LTD., Seoul (KR)
Filed on Aug. 23, 2022, as Appl. No. 17/821,753.
Application 17/821,753 is a continuation of application No. PCT/KR2021/003449, filed on Mar. 19, 2021.
Claims priority of application No. 10-2020-0034577 (KR), filed on Mar. 20, 2020; and application No. 10-2021-0010325 (KR), filed on Jan. 25, 2021.
Prior Publication US 2022/0404201 A1, Dec. 22, 2022
Int. Cl. G01N 15/0227 (2024.01); G01J 3/28 (2006.01)
CPC G01J 3/2823 (2013.01) [G01N 15/0227 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A hazardous material measuring apparatus comprising:
an air distribution unit which is mounted inside a case of the hazardous material measuring apparatus and into which external air is introduced and circulated;
a light emitting unit irradiating light to an area where the external air is distributed in the air distribution unit;
a light incident unit that light changed in a path by colliding against hazardous material particles enters;
a spectrometer obtaining an optical spectrum of the incident light;
a processor for deriving components and concentration of hazardous material particles contained in the external air introduced into the air distribution unit on the basis of the optical spectrum acquired through the spectrometer,
wherein an installation position of the spectrometer in the hazardous material measuring apparatus is determined according to the size of analysis target particles in consideration of an angle of the optical path changed according to the particle size; and
a noise measuring sensor measuring external noise generated around the hazardous material measuring apparatus.