TWO-CHANNEL OPTICAL SPEED METER Russian patent published in 1999 - IPC

FIELD: measurement of speed and length of long articles in process of their manufacture. SUBSTANCE: proposed speed meter may be used for location and spacing of blanks, in the capacity of borne meter of speed and distance covered by various vehicles ( railway, metro, automobile transport ). Meter incorporates optical sensor and electron unit. Optical sensor includes radiator, receiving lens, two raster analyzers, two photodetectors and two identical lenses positioned after receiving lens and optically coupled to it and to raster analyzers. Lenses are located on both sides of optical axis of sensor and at specified distances from receiving lens. EFFECT: high measurement precision under vibration. 1 dwg