| 摘要 |
PROBLEM TO BE SOLVED: To provide a particle size distribution measuring instrument and device of high precision, in a method for measuring the particle size distribution of powder and grain through image processing. SOLUTION: This instrument is constituted of a CCD camera 1 for imaging coal 5 on a belt conveyer 7, a flash lighting system 2 for conducting imaging illumination, an electric power source 3 for flash illumination for the flash lighting system 2, a controller 5 for controlling imaging and flash illumination start timing, and a particle size distribution analyzer 4 for collecting the imaged coal to analyze the particle size distribution. The flash lighting system 2 has a luminescent time shorted than the shutter opening time for an imaging device. COPYRIGHT: (C)2005,JPO&NCIPI
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