US 12,298,214 B2
Device for water examination
Young Dug Kim, Seongnam-si (KR); and Kyoung Man Cho, Seoul (KR)
Assigned to THE WAVE TALK, INC., Daejeon (KR)
Filed by THE WAVE TALK, INC., Daejeon (KR)
Filed on Mar. 14, 2022, as Appl. No. 17/693,725.
Claims priority of application No. 10-2021-0045964 (KR), filed on Apr. 8, 2021.
Prior Publication US 2022/0326132 A1, Oct. 13, 2022
Int. Cl. G01N 15/06 (2024.01); G01N 15/075 (2024.01); G01N 21/47 (2006.01); G01N 21/51 (2006.01)
CPC G01N 15/06 (2013.01) [G01N 21/4785 (2013.01); G01N 21/4788 (2013.01); G01N 15/075 (2024.01); G01N 2021/479 (2013.01); G01N 2021/516 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A water examination device comprising:
a main body;
a fluid accommodation unit formed in the main body;
a wave source for irradiating waves toward the fluid accommodation unit;
a detector for detecting a laser speckle at every set time period that is set in advance, the laser speckle being generated due to multiple scattering of the waves in the fluid;
a controller for estimating existence of impurities in the fluid by using the detected laser speckle; and
a calibration unit for controlling the wave source or the detector such that an intensity of light irradiated from the wave source and measured by the detector is within a certain range set in advance,
wherein the fluid accommodation unit includes:
a bottom portion formed in the main body; and
a wall portion formed to have a certain angle with respect to the bottom portion and includes a reflective region,
wherein an angle between the bottom portion and the wall portion is not a right angle,
wherein the wall portions facing each other are inclined with respect to the bottom portion toward each other,
wherein the wave source irradiates waves toward the wall portions, and
wherein the fluid accommodation unit is configured to accept a cup of fluid that is separatable from the fluid accommodation unit.