LASER SENSOR FOR DETECTING PARTICLE DENSITY Russian patent published in 2020 - IPC G01N15/14 G01B9/02 

FIELD: physics.

SUBSTANCE: laser sensor module for detecting particle density, as well as a corresponding method and a computer program product. Module comprises at least one first laser, at least one first detector and at least one electric driver. First laser is configured to emit the first laser radiation in response to signals generated by the electric driver. First detector is configured to detect the first interference signal of self-mixing of the optical wave inside the first laser resonator of the first laser. Interference signal of self-mixing is caused by reflected laser radiation re-entering the first laser resonator, wherein the first reflected laser radiation is reflected by a particle which receives at least part of the first laser radiation. Laser sensor module is configured to reduce multiple counts of the particle.

EFFECT: technical result is higher accuracy and speed of module operation.

14 cl, 10 dwg