Particle detection device, method and field programmable gate array (FPGA)

The invention relates to the technical field of particle detection, and discloses a particle detection device, method and a FPGA. The particle detection device comprises case body, a light source, a light path adjustment unit, a sample placement unit, a comparison unit, an image acquisition unit, and an analytical processing unit, wherein the light source is used for generating a light ray for detecting, the light path adjustment unit is used for adjusting the light ray for detecting, the sample placement unit is used for placing a to-be-detected sample containing particles; the comparison unit is used for placing a comparison sample which does not contain particles; the image acquisition unit is used for collecting a diffraction image; the analytical processing unit is used for analyzingthe diffraction image and obtaining a particle detection result; and the light source, the light path adjustment unit, the sample placement unit, the comparison unit and the image acquisition unit arearranged in the case body