Vane of multi -vane collimator positioner based on texture?features

The utility model discloses a vane of multi -vane collimator positioner based on texture?features all is equipped with a signal acquisition optic fibre on every blade, along the direction wiring that is on a parallel with blade length, be close to the fiber end face of blade head position and aim at the blade surface perpendicularly, and have certain clearance between fiber end face and the blade upper surface, every blade upper surface of multi -leaf collimator all is equipped with the alternate stripe of periodic light and shade, the device still includes processing circuit, with the signal acquisition fiber connection is carried out the optical signal who gathers photoelectric conversion and handles obtaining pulse signal to carry out pulse count to this pulse signal, the device still includes direction of motion acquisition circuit, is connected with the encoder of taking certainly of driving vane's motor. The utility model discloses a blade positioning of high accuracy to positioner long -term stability