Rotary viscometer low shear rate metering device based on special rotor and infrared photoelectric switch

The invention discloses a rotary viscometer low shear rate metering device based on a special rotor and an infrared photoelectric switch, and the rotary viscometer low shear rate metering device comprises a power supply, a single-chip microcomputer controller, a circular grid subdivision unit, a fast Fourier transform subdivision unit, a base vertical rod and a base cross rod, the circular grid subdivision unit comprises a motor, a rotating shaft and a rotor, the fast Fourier transform subdivision unit comprises a halogen tungsten lamp light source, a collimating lens, a rectangular prism, a focusing lens and a photoelectric detector, the circular grid subdivision unit is arranged on one side of the fast Fourier transform subdivision unit, the vertical rod is fixedly arranged on the base, and the transverse rods comprise the first transverse rod, the second transverse rod and the third transverse rod. The first transverse rod, the second transverse rod and the third transverse rod are all arranged on the left