US 12,352,676 B2
Particle group characteristic measurement device, particle group characteristic measurement method, storage medium recording program for particle group characteristic measurement device, particle diameter distribution measurement device, and particle diameter distribution measurement method
Yasuhiro Tatewaki, Kyoto (JP); and Shingo Fujiwara, Kyoto (JP)
Assigned to HORIBA, LTD., Kyoto (JP)
Appl. No. 17/754,831
Filed by HORIBA, Ltd., Kyoto (JP)
PCT Filed Oct. 6, 2020, PCT No. PCT/JP2020/037815
§ 371(c)(1), (2) Date Apr. 13, 2022,
PCT Pub. No. WO2021/075309, PCT Pub. Date Apr. 22, 2021.
Claims priority of application No. 2019-188443 (JP), filed on Oct. 15, 2019.
Prior Publication US 2024/0102907 A1, Mar. 28, 2024
Int. Cl. G01N 15/0227 (2024.01); G01N 15/0205 (2024.01); G01N 15/00 (2006.01)
CPC G01N 15/0227 (2013.01) [G01N 15/0211 (2013.01); G01N 2015/0053 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A particle group characteristic measurement device that measures changes over time in a particle group characteristic which is a characteristic of a particle group that is formed by a plurality of particles dispersed in a dispersion medium, comprising:
an image acquisition portion that includes image acquisition elements and acquires consecutive acquisition images of the particle group, each of the consecutive acquisition images being acquired using the image acquisition elements;
a particle information extraction portion that processes the consecutive acquisition images acquired by the image acquisition portion, and then extracts particle information which is information about the particles appearing in the consecutive acquisition images;
a particle group characteristic calculation portion that calculates the particle group characteristic at a plurality of time points in a time series based on the particle information extracted from a plurality of the consecutive acquisition images acquired prior to the respective time points, the particle group characteristic being a representative particle diameter of a plurality of particles forming the particle group; and
a display control portion that displays a graph showing changes over time in the representative particle diameter calculated by the particle group characteristic calculation portion at each of the plurality of time points, wherein
a portion of the plurality of the consecutive acquisition images used to calculate the particle group characteristic at one time point of the plurality of time points overlaps in image acquisition time period with a portion of the plurality of the consecutive acquisition images used to calculate the particle group characteristic at an earlier time point of the plurality of time points.